The SGUAI smart bottle from Germany that allows you to see the temperature inside the bottle at a glance is great.

Written by Mioko Matsubara
written by Outdoor Gearzine Editorial Department
written by Outdoor Gearzine Editorial Department
written by Outdoor Gearzine Editorial Department
Written by Yasushi Hisatomi
written by Outdoor Gearzine Editorial Department
written by Outdoor Gearzine Editorial Department
written by Outdoor Gearzine Editorial Department
written by Outdoor Gearzine Editorial Department
Written by Mioko Matsubara